@Override
public void _processEventIO(InjectionEventI event, Object... args) throws IOException {
if (event == InjectionEvent.DATANODE_PROCESS_RAID_TASK) {
int namespaceId = nn.getNamespaceID();
DataNode dn = (DataNode) args[0];
RaidTaskCommand rtc = (RaidTaskCommand) args[1];
RaidTask[] tasks = rtc.tasks;
for (RaidTask rw : tasks) {
// Generate all parity block locally instead of sending them remotely
try {
for (int idx = 0; idx < rw.toRaidIdxs.length; idx++) {
Block blk = rw.stripeBlocks[rw.toRaidIdxs[idx]];
blk.setNumBytes(blockSize);
BlockDataFile.Writer dataOut =
((BlockInlineChecksumWriter)
dn.getFSDataset()
.writeToBlock(namespaceId, blk, blk, false, false, 1, 512))
.getBlockDataFile()
.getWriter(0);
dataOut.write(bytes);
dataOut.close();
dn.finalizeAndNotifyNamenode(namespaceId, blk);
}
} catch (IOException ioe) {
LOG.warn(ioe);
}
}
}
}
